package moves

import "testing"

// A move compares the instance key like any instance variable: a target
// that would start with a different key, or none, is a difference the
// launch check reports, never a note (L21).
func TestEnvReportComparesTheInstanceKey(t *testing.T) {
	const name = "CARLOS_INSTANCE_KEY"
	if got := Class(name); got != "equal" {
		t.Fatalf("Class(%s) = %q, want equal", name, got)
	}
	key := []byte("0123456789abcdef0123456789abcdef")
	src := ReportEnv(key, map[string]string{name: "a2V5LW9uZQ==", "CARLOS_REGION": "ie"})
	for _, tc := range []struct {
		target map[string]string
		want   string
	}{
		{map[string]string{name: "a2V5LXR3bw==", "CARLOS_REGION": "uk"}, "differs"},
		{map[string]string{"CARLOS_REGION": "uk"}, "missing"},
	} {
		// The kind is the whole check: T3 (movesreport.go) fails on every
		// kind but advisory-differs, which only an advisory variable gets.
		diffs := CompareEnv(src, ReportEnv(key, tc.target), false, false)
		if len(diffs) != 1 || diffs[0].Name != name || diffs[0].Kind != tc.want {
			t.Fatalf("diffs = %+v, want one %s on %s", diffs, tc.want, name)
		}
	}
	if diffs := CompareEnv(src, ReportEnv(key, map[string]string{name: "a2V5LW9uZQ==", "CARLOS_REGION": "uk"}), false, false); len(diffs) != 0 {
		t.Fatalf("the same key reported a difference: %+v", diffs)
	}
}